The second of the eleven harbingers of Fatui.
His face is covered by a mask. His soul is hidden by darkness. 
Perhaps the most terrible and inhuman Harbinger. He perceives others either as pawns in his games or as material for his experiments. His shadow alone can strike terror into anyone who sees a sinister figure. And it doesn't matter where the man comes from, Dottore scares both the students of the Sumeru Academy and the soldiers of Fatui equally.